Farm animal models of organic dust exposure and toxicity: insights and implications for respiratory health.

Abstract:

PURPOSE OF REVIEW:Modern food animal production is a major contributor to the global economy, owing to advanced intensive indoor production facilities aimed at increasing market readiness and profit. Consequences of these advances are accumulation of dusts, gases, and microbial products that diminish air quality within production facilities. Chronic inhalation exposure contributes to onset and exacerbation of respiratory symptoms and diseases in animals and workers. This article reviews literature regarding constituents of farm animal production facility dusts, animal responses to production building and organic dust exposure, and the effect of chronic inhalation exposure on pulmonary oxidative stress and inflammation. RECENT FINDINGS:Porcine models of production facility and organic dust exposures reveal striking similarities to observations of human cells, tissues, and clinical data. Oxidative stress plays a key role in mediating respiratory diseases in animals and humans, and enhancement of antioxidant levels through nutritional supplements can improve respiratory health. SUMMARY:Pigs are well adapted to the exposures common to swine production buildings and thus serve as excellent models for facility workers. Insight for understanding mechanisms governing organic dust associated respiratory diseases may come from parallel comparisons between farmers and the animals they raise.

authors

McClendon CJ,Gerald CL,Waterman JT

doi

10.1097/ACI.0000000000000143

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

137-44

issue

2

eissn

1528-4050

issn

1473-6322

journal_volume

15

pub_type

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